The palette
A single dark ink, a very light ground, and the water in a muted blue green. Tokyo has neither a dominant stone nor a dominant tile, no material colours the city in mass: it is the fineness and extreme density of the network of alleys that makes the texture. The palette therefore has to work on two widely separated values, so that lacework stays a grey weave and does not close into a black field in print. Keep the colour for the moats, the Sumida and the bay.